diff --git a/src/adc/adcconst.h b/src/adc/adcconst.h
index 45e4f38..fc556ba 100644
--- a/src/adc/adcconst.h
+++ b/src/adc/adcconst.h
@@ -1,6 +1,6 @@
 /*
  * uhub - A tiny ADC p2p connection hub
- * Copyright (C) 2007-2009, Jan Vidar Krey
+ * Copyright (C) 2007-2012, Jan Vidar Krey
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -85,6 +85,10 @@ typedef uint32_t fourcc_t;
 #define ADC_CMD_DINF FOURCC('D','I','N','F')
 #define ADC_CMD_EINF FOURCC('E','I','N','F')
 #define ADC_CMD_FINF FOURCC('F','I','N','F')
+#define ADC_CMD_BQUI FOURCC('B','Q','U','I')
+#define ADC_CMD_DQUI FOURCC('D','Q','U','I')
+#define ADC_CMD_EQUI FOURCC('E','Q','U','I')
+#define ADC_CMD_FQUI FOURCC('F','Q','U','I')
 
 /* Extension messages */
 #define ADC_CMD_HCHK FOURCC('H','C','H','K')
diff --git a/src/core/hub.c b/src/core/hub.c
index 11f2f14..db7e87f 100644
--- a/src/core/hub.c
+++ b/src/core/hub.c
@@ -1,6 +1,6 @@
 /*
  * uhub - A tiny ADC p2p connection hub
- * Copyright (C) 2007-2011, Jan Vidar Krey
+ * Copyright (C) 2007-2012, Jan Vidar Krey
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
@@ -76,6 +76,10 @@ int hub_handle_message(struct hub_info* hub, struct hub_user* u, const char* lin
 			case ADC_CMD_DINF:
 			case ADC_CMD_EINF:
 			case ADC_CMD_FINF:
+			case ADC_CMD_BQUI:
+			case ADC_CMD_DQUI:
+			case ADC_CMD_EQUI:
+			case ADC_CMD_FQUI:
 				/* these must never be allowed for security reasons, so we ignore them. */
 				CHECK_FLOOD(extras, 1);
 				break;